lib/c-vsnprintf.h

   1 /* vsnprintf in C locale.
   2    Copyright (C) 2012-2018 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 3, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License along
  15    with this program; if not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #ifndef _C_VSNPRINTF_H
  18 #define _C_VSNPRINTF_H
  19
  20 /* Get size_t.  */
  21 #include <stddef.h>
  22
  23 /* Get va_list. */
  24 #include <stdarg.h>
  25
  26 /* The __attribute__ feature is available in gcc versions 2.5 and later.
  27    The __-protected variants of the attributes 'format' and 'printf' are
  28    accepted by gcc versions 2.6.4 (effectively 2.7) and later.
  29    We enable _GL_ATTRIBUTE_FORMAT only if these are supported too, because
  30    gnulib and libintl do '#define printf __printf__' when they override
  31    the 'printf' function.  */
  32 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
  33 # define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
  34 #else
  35 # define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
  36 #endif
  37
  38 #ifdef __cplusplus
  39 extern "C" {
  40 #endif
  41
  42 int c_vsnprintf (char *str, size_t size, const char *format, va_list args)
  43        _GL_ATTRIBUTE_FORMAT ((__printf__, 3, 0));
  44
  45 #ifdef __cplusplus
  46 }
  47 #endif
  48
  49 #endif /* _C_VSNPRINTF_H */